Emergency stop system for elevator

Abstract

Disclosed is an elevator system having: a holding relay configured to energize and deenergize a circuit, the holding relay configured to communicate over a wireless network with a mobile device, wherein the holding relay is configured to: deenergize the circuit responsive to receiving a first signal via the wireless network from the mobile device, indicative of the mobile device being in or near a first architectural location.

What is claimed is: 
     
       1. An elevator system comprising:
 a hoistway having a pit; 
 an elevator car configured to move in the hoistway; 
 an elevator car controller that controls the elevator car; 
 a circuit operationally coupled to the car controller, wherein the controller is configured to stop the elevator car upon sensing a power loss in the circuit; 
 a holding relay configured to energize and deenergize the circuit; 
 a mobile phone that is configured to determine when it is in or near the hoistway pit; 
 wherein the holding relay configured to: 
 pair with the mobile phone over a wireless network; 
 receive a first signal from the mobile phone, after pairing, with instructions to de-energize the circuit when the mobile device determines that it is in or near the hoistway pit; and 
 deenergize the circuit responsive to receiving the first signal via the wireless network from the mobile phone. 
 
     
     
       2. The elevator system of  claim 1 , wherein the holding relay is further configured to energize the circuit responsive to receiving a second signal from the mobile phone with instructions to energize the circuit when the mobile phone determines that it has left the hoistway pit. 
     
     
       3. The elevator system of  claim 1 , wherein the elevator car controller is configured to run the elevator car upon detecting that the circuit is energized. 
     
     
       4. The elevator system of  claim 1 , wherein the elevator controller is in a controller room of the hoistway.